2 * linux/drivers/message/fusion/mptfc.c
3 * For use with LSI Logic PCI chip/adapter(s)
4 * running LSI Logic Fusion MPT (Message Passing Technology) firmware.
6 * Copyright (c) 1999-2005 LSI Logic Corporation
7 * (mailto:mpt_linux_developer@lsil.com)
10 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
12 This program is free software; you can redistribute it and/or modify
13 it under the terms of the GNU General Public License as published by
14 the Free Software Foundation; version 2 of the License.
16 This program is distributed in the hope that it will be useful,
17 but WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 GNU General Public License for more details.
22 THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR
23 CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT
24 LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT,
25 MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is
26 solely responsible for determining the appropriateness of using and
27 distributing the Program and assumes all risks associated with its
28 exercise of rights under this Agreement, including but not limited to
29 the risks and costs of program errors, damage to or loss of data,
30 programs or equipment, and unavailability or interruption of operations.
32 DISCLAIMER OF LIABILITY
33 NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY
34 DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
35 DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND
36 ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
37 TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
38 USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED
39 HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES
41 You should have received a copy of the GNU General Public License
42 along with this program; if not, write to the Free Software
43 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
45 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
46 #include "linux_compat.h" /* linux-2.6 tweaks */
47 #include <linux/module.h>
48 #include <linux/kernel.h>
49 #include <linux/init.h>
50 #include <linux/errno.h>
51 #include <linux/kdev_t.h>
52 #include <linux/blkdev.h>
53 #include <linux/delay.h> /* for mdelay */
54 #include <linux/interrupt.h> /* needed for in_interrupt() proto */
55 #include <linux/reboot.h> /* notifier code */
56 #include <linux/sched.h>
57 #include <linux/workqueue.h>
59 #include <scsi/scsi.h>
60 #include <scsi/scsi_cmnd.h>
61 #include <scsi/scsi_device.h>
62 #include <scsi/scsi_host.h>
63 #include <scsi/scsi_tcq.h>
68 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
69 #define my_NAME "Fusion MPT FC Host driver"
70 #define my_VERSION MPT_LINUX_VERSION_COMMON
73 MODULE_AUTHOR(MODULEAUTHOR);
74 MODULE_DESCRIPTION(my_NAME);
75 MODULE_LICENSE("GPL");
77 /* Command line args */
78 static int mpt_pq_filter = 0;
79 module_param(mpt_pq_filter, int, 0);
80 MODULE_PARM_DESC(mpt_pq_filter, " Enable peripheral qualifier filter: enable=1 (default=0)");
82 static int mptfcDoneCtx = -1;
83 static int mptfcTaskCtx = -1;
84 static int mptfcInternalCtx = -1; /* Used only for internal commands */
86 static struct scsi_host_template mptfc_driver_template = {
87 .module = THIS_MODULE,
89 .proc_info = mptscsih_proc_info,
90 .name = "MPT FC Host",
91 .info = mptscsih_info,
92 .queuecommand = mptscsih_qcmd,
93 .target_alloc = mptscsih_target_alloc,
94 .slave_alloc = mptscsih_slave_alloc,
95 .slave_configure = mptscsih_slave_configure,
96 .target_destroy = mptscsih_target_destroy,
97 .slave_destroy = mptscsih_slave_destroy,
98 .change_queue_depth = mptscsih_change_queue_depth,
99 .eh_abort_handler = mptscsih_abort,
100 .eh_device_reset_handler = mptscsih_dev_reset,
101 .eh_bus_reset_handler = mptscsih_bus_reset,
102 .eh_host_reset_handler = mptscsih_host_reset,
103 .bios_param = mptscsih_bios_param,
104 .can_queue = MPT_FC_CAN_QUEUE,
106 .sg_tablesize = MPT_SCSI_SG_DEPTH,
109 .use_clustering = ENABLE_CLUSTERING,
112 /****************************************************************************
116 static struct pci_device_id mptfc_pci_table[] = {
117 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FC909,
118 PCI_ANY_ID, PCI_ANY_ID },
119 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FC919,
120 PCI_ANY_ID, PCI_ANY_ID },
121 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FC929,
122 PCI_ANY_ID, PCI_ANY_ID },
123 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FC919X,
124 PCI_ANY_ID, PCI_ANY_ID },
125 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FC929X,
126 PCI_ANY_ID, PCI_ANY_ID },
127 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FC939X,
128 PCI_ANY_ID, PCI_ANY_ID },
129 { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FC949X,
130 PCI_ANY_ID, PCI_ANY_ID },
131 {0} /* Terminating entry */
133 MODULE_DEVICE_TABLE(pci, mptfc_pci_table);
135 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
136 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
138 * mptfc_probe - Installs scsi devices per bus.
139 * @pdev: Pointer to pci_dev structure
141 * Returns 0 for success, non-zero for failure.
145 mptfc_probe(struct pci_dev *pdev, const struct pci_device_id *id)
147 struct Scsi_Host *sh;
158 if ((r = mpt_attach(pdev,id)) != 0)
161 ioc = pci_get_drvdata(pdev);
162 ioc->DoneCtx = mptfcDoneCtx;
163 ioc->TaskCtx = mptfcTaskCtx;
164 ioc->InternalCtx = mptfcInternalCtx;
166 /* Added sanity check on readiness of the MPT adapter.
168 if (ioc->last_state != MPI_IOC_STATE_OPERATIONAL) {
169 printk(MYIOC_s_WARN_FMT
170 "Skipping because it's not operational!\n",
173 goto out_mptfc_probe;
177 printk(MYIOC_s_WARN_FMT "Skipping because it's disabled!\n",
180 goto out_mptfc_probe;
183 /* Sanity check - ensure at least 1 port is INITIATOR capable
186 for (ii=0; ii < ioc->facts.NumberOfPorts; ii++) {
187 if (ioc->pfacts[ii].ProtocolFlags &
188 MPI_PORTFACTS_PROTOCOL_INITIATOR)
193 printk(MYIOC_s_WARN_FMT
194 "Skipping ioc=%p because SCSI Initiator mode is NOT enabled!\n",
199 sh = scsi_host_alloc(&mptfc_driver_template, sizeof(MPT_SCSI_HOST));
202 printk(MYIOC_s_WARN_FMT
203 "Unable to register controller with SCSI subsystem\n",
206 goto out_mptfc_probe;
209 spin_lock_irqsave(&ioc->FreeQlock, flags);
211 /* Attach the SCSI Host to the IOC structure
219 /* set 16 byte cdb's */
220 sh->max_cmd_len = 16;
222 sh->max_id = MPT_MAX_FC_DEVICES<256 ? MPT_MAX_FC_DEVICES : 255;
224 sh->max_lun = MPT_LAST_LUN + 1;
226 sh->this_id = ioc->pfacts[0].PortSCSIID;
230 sh->unique_id = ioc->id;
232 /* Verify that we won't exceed the maximum
233 * number of chain buffers
234 * We can optimize: ZZ = req_sz/sizeof(SGE)
236 * numSGE = 1 + (ZZ-1)*(maxChain -1) + ZZ
237 * + (req_sz - 64)/sizeof(SGE)
238 * A slightly different algorithm is required for
241 scale = ioc->req_sz/(sizeof(dma_addr_t) + sizeof(u32));
242 if (sizeof(dma_addr_t) == sizeof(u64)) {
243 numSGE = (scale - 1) *
244 (ioc->facts.MaxChainDepth-1) + scale +
245 (ioc->req_sz - 60) / (sizeof(dma_addr_t) +
248 numSGE = 1 + (scale - 1) *
249 (ioc->facts.MaxChainDepth-1) + scale +
250 (ioc->req_sz - 64) / (sizeof(dma_addr_t) +
254 if (numSGE < sh->sg_tablesize) {
255 /* Reset this value */
256 dprintk((MYIOC_s_INFO_FMT
257 "Resetting sg_tablesize to %d from %d\n",
258 ioc->name, numSGE, sh->sg_tablesize));
259 sh->sg_tablesize = numSGE;
262 spin_unlock_irqrestore(&ioc->FreeQlock, flags);
264 hd = (MPT_SCSI_HOST *) sh->hostdata;
267 /* SCSI needs scsi_cmnd lookup table!
268 * (with size equal to req_depth*PtrSz!)
270 hd->ScsiLookup = kcalloc(ioc->req_depth, sizeof(void *), GFP_ATOMIC);
271 if (!hd->ScsiLookup) {
273 goto out_mptfc_probe;
276 dprintk((MYIOC_s_INFO_FMT "ScsiLookup @ %p\n",
277 ioc->name, hd->ScsiLookup));
279 /* Allocate memory for the device structures.
280 * A non-Null pointer at an offset
281 * indicates a device exists.
282 * max_id = 1 + maximum id (hosts.h)
284 hd->Targets = kcalloc(sh->max_id, sizeof(void *), GFP_ATOMIC);
287 goto out_mptfc_probe;
290 dprintk((KERN_INFO " vdev @ %p\n", hd->Targets));
292 /* Clear the TM flags
295 hd->tmState = TM_STATE_NONE;
296 hd->resetPending = 0;
297 hd->abortSCpnt = NULL;
299 /* Clear the pointer used to store
300 * single-threaded commands, i.e., those
301 * issued during a bus scan, dv and
302 * configuration pages.
306 /* Initialize this SCSI Hosts' timers
307 * To use, set the timer expires field
310 init_timer(&hd->timer);
311 hd->timer.data = (unsigned long) hd;
312 hd->timer.function = mptscsih_timer_expired;
314 hd->mpt_pq_filter = mpt_pq_filter;
316 ddvprintk((MYIOC_s_INFO_FMT
317 "mpt_pq_filter %x\n",
321 init_waitqueue_head(&hd->scandv_waitq);
322 hd->scandv_wait_done = 0;
323 hd->last_queue_full = 0;
325 error = scsi_add_host (sh, &ioc->pcidev->dev);
327 dprintk((KERN_ERR MYNAM
328 "scsi_add_host failed\n"));
329 goto out_mptfc_probe;
337 mptscsih_remove(pdev);
341 static struct pci_driver mptfc_driver = {
343 .id_table = mptfc_pci_table,
344 .probe = mptfc_probe,
345 .remove = __devexit_p(mptscsih_remove),
346 .shutdown = mptscsih_shutdown,
348 .suspend = mptscsih_suspend,
349 .resume = mptscsih_resume,
353 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
355 * mptfc_init - Register MPT adapter(s) as SCSI host(s) with
356 * linux scsi mid-layer.
358 * Returns 0 for success, non-zero for failure.
364 show_mptmod_ver(my_NAME, my_VERSION);
366 mptfcDoneCtx = mpt_register(mptscsih_io_done, MPTFC_DRIVER);
367 mptfcTaskCtx = mpt_register(mptscsih_taskmgmt_complete, MPTFC_DRIVER);
368 mptfcInternalCtx = mpt_register(mptscsih_scandv_complete, MPTFC_DRIVER);
370 if (mpt_event_register(mptfcDoneCtx, mptscsih_event_process) == 0) {
371 devtprintk((KERN_INFO MYNAM
372 ": Registered for IOC event notifications\n"));
375 if (mpt_reset_register(mptfcDoneCtx, mptscsih_ioc_reset) == 0) {
376 dprintk((KERN_INFO MYNAM
377 ": Registered for IOC reset notifications\n"));
380 return pci_register_driver(&mptfc_driver);
383 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
384 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
386 * mptfc_exit - Unregisters MPT adapter(s)
392 pci_unregister_driver(&mptfc_driver);
394 mpt_reset_deregister(mptfcDoneCtx);
395 dprintk((KERN_INFO MYNAM
396 ": Deregistered for IOC reset notifications\n"));
398 mpt_event_deregister(mptfcDoneCtx);
399 dprintk((KERN_INFO MYNAM
400 ": Deregistered for IOC event notifications\n"));
402 mpt_deregister(mptfcInternalCtx);
403 mpt_deregister(mptfcTaskCtx);
404 mpt_deregister(mptfcDoneCtx);
407 module_init(mptfc_init);
408 module_exit(mptfc_exit);